turnip: Add emit functions in a header.

This adds a radv-style check_space functions + emit functions.

Also puts them in a header as a bunch of inlines, so

(1) we can use them from meta code.
(2) they are inline for performance as these are common and small.

Did not put them in tu_private.h as a bunch of inlines only
clutters up that huge headerfile.

Precise error propagation for memory allocation failures is still
todo.

2 files changed, 109 insertions, 25 deletions

diff --git a/src/freedreno/vulkan/tu_cmd_buffer.c b/src/freedreno/vulkan/tu_cmd_buffer.c
index df72d4a7b31..41bd82e3cfc 100644
--- a/src/freedreno/vulkan/tu_cmd_buffer.c
+++ b/src/freedreno/vulkan/tu_cmd_buffer.c
@@ -29,6 +29,8 @@
 
 #include "vk_format.h"
 #include "adreno_pm4.xml.h"
+#include "tu_cs.h"
+
 void
 tu_bo_list_init(struct tu_bo_list *list)
 {
@@ -200,29 +202,20 @@ tu_cmd_stream_reset(struct tu_device *dev,
    stream->entry_count = 0;
 }
 
-static unsigned
-_odd_parity_bit(unsigned val)
-{
-        /* See: http://graphics.stanford.edu/~seander/bithacks.html#ParityParallel
-         * note that we want odd parity so 0x6996 is inverted.
-         */
-        val ^= val >> 16;
-        val ^= val >> 8;
-        val ^= val >> 4;
-        val &= 0xf;
-        return (~0x6996 >> val) & 1;
-}
-
-static void
-OUT_PKT7(struct tu_cmd_stream *stream, uint8_t opcode, uint16_t cnt)
+VkResult
+tu_cs_check_space(struct tu_device *dev,
+                  struct tu_cmd_stream *stream,
+                  size_t size)
 {
-   *stream->cur++ = CP_TYPE7_PKT | cnt |
-                   (_odd_parity_bit(cnt) << 15) |
-                   ((opcode & 0x7f) << 16) |
-                   ((_odd_parity_bit(opcode) << 23));
-}
+   if (stream->end - stream->cur >= size)
+      return VK_SUCCESS;
 
+   VkResult result = tu_cmd_stream_end(stream);
+   if (result != VK_SUCCESS)
+      return result;
 
+   return tu_cmd_stream_begin(dev, stream, size);
+}
 
 const struct tu_dynamic_state default_dynamic_state = {
    .viewport =
@@ -553,11 +546,12 @@ tu_BeginCommandBuffer(VkCommandBuffer commandBuffer,
                                 &cmd_buffer->cs, 4096);
 
    /* Put some stuff in so we do not have empty command buffers. */
-   OUT_PKT7(&cmd_buffer->cs, CP_NOP, 4);
-   *cmd_buffer->cs.cur++ = 0;
-   *cmd_buffer->cs.cur++ = 0;
-   *cmd_buffer->cs.cur++ = 0;
-   *cmd_buffer->cs.cur++ = 0;
+   tu_cs_emit_pkt7(&cmd_buffer->cs, CP_NOP, 4);
+   tu_cs_emit(&cmd_buffer->cs, 0);
+   tu_cs_emit(&cmd_buffer->cs, 0);
+   tu_cs_emit(&cmd_buffer->cs, 0);
+   tu_cs_emit(&cmd_buffer->cs, 0);
+
    return result;
 }
 
diff --git a/src/freedreno/vulkan/tu_cs.h b/src/freedreno/vulkan/tu_cs.h
new file mode 100644
index 00000000000..e865c738dde
--- /dev/null
+++ b/src/freedreno/vulkan/tu_cs.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright © 2019 Google LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#ifndef TU_CS_H
+#define TU_CS_H
+
+#include "tu_private.h"
+
+#include "adreno_pm4.xml.h"
+
+void
+tu_cmd_stream_init(struct tu_cmd_stream *stream);
+void
+tu_cmd_stream_finish(struct tu_device *dev, struct tu_cmd_stream *stream);
+VkResult
+tu_cmd_stream_begin(struct tu_device *dev,
+                    struct tu_cmd_stream *stream,
+                    uint32_t reserve_size);
+VkResult
+tu_cmd_stream_end(struct tu_cmd_stream *stream);
+void
+tu_cmd_stream_reset(struct tu_device *dev, struct tu_cmd_stream *stream);
+VkResult
+tu_cs_check_space(struct tu_device *dev,
+                  struct tu_cmd_stream *stream,
+                  size_t size);
+
+static inline void
+tu_cs_emit(struct tu_cmd_stream *stream, uint32_t value)
+{
+   assert(stream->cur < stream->end);
+   *stream->cur = value;
+   ++stream->cur;
+}
+
+static inline unsigned
+tu_odd_parity_bit(unsigned val)
+{
+   /* See: http://graphics.stanford.edu/~seander/bithacks.html#ParityParallel
+    * note that we want odd parity so 0x6996 is inverted.
+    */
+   val ^= val >> 16;
+   val ^= val >> 8;
+   val ^= val >> 4;
+   val &= 0xf;
+   return (~0x6996 >> val) & 1;
+}
+
+static inline void
+tu_cs_emit_pkt4(struct tu_cmd_stream *stream, uint16_t regindx, uint16_t cnt)
+{
+   tu_cs_emit(stream, CP_TYPE4_PKT | cnt | (tu_odd_parity_bit(cnt) << 7) |
+                         ((regindx & 0x3ffff) << 8) |
+                         ((tu_odd_parity_bit(regindx) << 27)));
+}
+
+static inline void
+tu_cs_emit_pkt7(struct tu_cmd_stream *stream, uint8_t opcode, uint16_t cnt)
+{
+   tu_cs_emit(stream, CP_TYPE7_PKT | cnt | (tu_odd_parity_bit(cnt) << 15) |
+                         ((opcode & 0x7f) << 16) |
+                         ((tu_odd_parity_bit(opcode) << 23)));
+}
+
+static inline void
+tu_cs_emit_wfi5(struct tu_cmd_stream *stream)
+{
+   tu_cs_emit_pkt7(stream, CP_WAIT_FOR_IDLE, 0);
+}
+
+#endif /* TU_CS_H */